Add time:08/12/2019         Source:sciencedirect.com

The preparation of ZnO nanoparticles with a multi-step process is reported. The preparation path included zinc hydroxide nitrate (ZnHN) or zinc hydroxide carbonate (ZnHC) precipitation, their thermal treatment and nano-milling. ZnO preparation was followed in detail by STEM, FT-IR, XRD and TG-MS analyses. In order to demonstrate the efficiency of the nano-milling process, the obtained ZnO nanoparticles were characterized with regard to their photo-catalytic activity of caffeine degradation. The smallest ZnO nanoparticles (∼20 nm) with the highest BET surface (∼80 m2 g−1) were prepared from ZnHC at 300 °C.

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